diff --git a/jobserver/settings.py b/jobserver/settings.py
index 3cef31bd6..22d1bad3f 100644
--- a/jobserver/settings.py
+++ b/jobserver/settings.py
@@ -212,6 +212,11 @@ def immutable_file_test(path, url):
 MEDIA_URL = "/uploads/"
 
 
+# Form submission
+# https://docs.djangoproject.com/en/5.1/ref/settings/#data-upload-max-number-fields
+DATA_UPLOAD_MAX_NUMBER_FIELDS = 2000
+
+
 # Logging
 # https://docs.djangoproject.com/en/3.1/topics/logging/
 LOGGING = logging_config_dict